1. Function & Structures of Cardiovascular System

2. Cardiovascular System Function
Transports materials to and from the cells
Nutrients
Oxygen
Waste
Hormones

3. Closed Circulatory System
blood is confined to vessels
The heart pumps blood into large vessels that branch into smaller ones leading into the organs.
Materials exchanged by diffusion between blood and the interstitial fluid bathing the cells.

4. Cardiovascular System Structures
1. The Heart- cardiac muscle
four chambers
Right atrium
Right ventricle
Left atrium
Left ventricle

5. Did you know? When veins break - varicose veins form
2. Blood Vessels -A network of tubes
Arteriesarterioles move away from the heart
Circular Smooth Muscle
Capillaries – where gas exchange takes place.
One cell thick
Serves the Respiratory System
VeinsVenules moves towards the heart
Skeletal Muscles contract to force blood back from legs
One way valves
Did you know? When veins break - varicose veins form

6. 3. The Blood Plasma Liquid portion of the blood.
Contains clotting factors, hormones, antibodies, dissolved gases, nutrients and waste

7. B. Erythrocytes - Red Blood Cells
Carry hemoglobin and oxygen.
Did you know?
Red blood cells do not have a nucleus and live only about 120 days and that they cannot repair themselves.

8. C. Leukocytes – White Blood cells
Fight infection and are formed in the bone marrow

9. D. Thrombocytes – Platelets.
Cell fragments (proteins) that clot blood by sticking together

10. Two Circuits Pulmonary circuit Systemic circuit
The blood pathway between the right side of the heart, to the lungs, and back to the left side of the heart.
Systemic circuit
The pathway between the left and right sides of the heart (from heart to body and back).